Size-Reduced Rectangular Patch Hybrid Coupler Using Patterned Ground Plane

This paper presents, for the first time, the design of a size-reduced rectangular patch hybrid coupler. Different types of compact rectangular patch hybrid couplers with different ground plane patterns are described. For demonstration, two compact rectangular patch hybrid couplers are designed to op...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 2009-01, Vol.57 (1), p.180-188
Main Authors: Shao Yong Zheng, Shao Yong Zheng, Sai Ho Yeung, Sai Ho Yeung, Wing Shing Chan, Wing Shing Chan, Kim Fung Man, Kim Fung Man, Shu Hung Leung, Shu Hung Leung
Format: Article
Language:English
Subjects:
3-dB hybrid coupler
Applied sciences
Bandwidth
Circuit properties
Coupling circuits
Dielectric substrates
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
Fabrication
Ground plane
Impedance
Joining
Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits
Microwaves
Patch antennas
Patterned ground plane structure
rectangular patch hybrid coupler
Size measurement
Size reduction
Wireless communication
Wireless LAN
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Summary:This paper presents, for the first time, the design of a size-reduced rectangular patch hybrid coupler. Different types of compact rectangular patch hybrid couplers with different ground plane patterns are described. For demonstration, two compact rectangular patch hybrid couplers are designed to operate at 3.5 GHz. They are measured to have 30.1% and 33.3% bandwidth with 67.3% and 72.3% size reduction compared with the optimized one without patterned ground plane.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2008.2009040